To find the length of the cord when the stretching force is 2.5N, we can use the concept of the elastic limit.
We know that the elastic limit occurs when the load is 4N and the length is 0.8cm. So, the ratio of load to length is:
(4N / 0.8cm) = (2.5N / x)
Cross multiplying, we get:
4N * x = 0.8cm * 2.5N
4x = 0.8cm * 2.5
4x = 2cm
Dividing both sides by 4, we get:
x = 2cm / 4
x = 0.5cm
Therefore, when the stretching force is 2.5N, the length of the cord will be 0.5cm.
An elastic cord can be stretched to it elastic limit by a load of 4N. If a 40cm length of the cord is extended to 0.8cm by a force of 0.5N. What will be the length of the cord when the stretching point is 2.5
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